Facebook layout

Compared to every other browser I've used, Chrome, Edge, and Firefox, Vivaldi is the only one where facebook looks different. Normally your friends list and some game stuff would appear in a panel on the entire right side but instead it just appears as a small chat window. The only time other browsers will display facebook in the same way i see it in Vivaldi is if the browser width is below a certain threshold. Example, Microsoft Edge vs Vivaldi, same screen width. http://i.imgur.com/L4ZqMAm.png